“树衣”防苹果水锈病效果观察苹果水锈病又称煤污病，系病菌侵染果实所致。病斑多呈黑褐色，无明显边缘，似煤污状，常和蝇粪病混合发生，果实感染该病后，经济价值大大降低。一般情况下该病多发生于雨季，高温多雨，空气湿度过大，果园通风透光不良利于该病发生。如１９... “Tree clothing” anti-rust effect of apple observation Apple water rust, also known as coal pollution, the bacteria caused by infection of fruit. Lesions were mostly dark brown, no obvious edge, like coal pollution, often mixed with fly fecal disease occurs, the fruit infected with the disease, the economic value greatly reduced. Under normal circumstances the disease occurred in the rainy season, high temperature and rainy, the air humidity is too large, poor orchard ventilation is not conducive to the occurrence of the disease. Such as 19 ...